Home
Class 12
CHEMISTRY
The amount of urea to be dissolved in 50...

The amount of urea to be dissolved in `500` cc of water `(K_(f)=1.86)` to produce a depresssion of `0.186^(@)C` in the freezing point is :

A

`9`g

B

`6`g

C

`3`g

D

`0.3`g

Text Solution

Verified by Experts

The correct Answer is:
C
`DeltaT_(f)=K(f)xx(w_(b)xx1000)/(m_(b)xxw_(A))`
`0.186=1.86xx(w_(B)xx1000)/(60xx500)w_(B)=3g`
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    A2Z|Exercise Osmotic Pressure|40 Videos

  • SOLUTIONS

    A2Z|Exercise Van'T Hoff Factor|37 Videos

  • SOLUTIONS

    A2Z|Exercise Elevation Of Boiling Point|21 Videos

  • SOLID STATE

    A2Z|Exercise Section D - Chapter End Test|30 Videos

  • SURFACE CHEMISTRY

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

How many moles of sucrose should be dissolved in 500 g of water so as to get a solution which has a difference of 103.57^(@)C between boiling point and freezing point :- (K_(f)=1.86" K kg mol"^(-1), K_(b)="0.52 K kg mol"^(-1))

How many moles of sucrose should be dissolved in 500 g of water so as to get a solution which has a difference of 104^(@)C between boiling point and freezing point ? ( K_(f) = 1.86 K kg mol^(-1) , K_(b) = 0.52 K kg mol^(-1) )

How many grams of sucrose (molecular weight 342) should be dissolved in 100 g water in order to produce a solution with 105^(@)C difference between the freezing point and the boiling point ? (K_(b) =0.51^(@)C m^(-1) , (K_(f) =1.86^(@)C m^(-1))

A solution containing 6.35g of a non electrolyte dissolved in 500 g of wate freezes at -0.465^(@)"C". Determine the molecular weight of the solute. ["K"_("f")"for water 1.86"^@)"C"//"m"]

A2Z-SOLUTIONS-Depression Of Freezing Point
  1. What frezing point depression would be predicted for 0.2molal solution...

    Text Solution

    |

  2. How much ethyl alcohol must be added to 1.00 L of water so that the so...

    Text Solution

    |

  3. The amount of urea to be dissolved in 500 cc of water (K(f)=1.86) to p...

    Text Solution

    |

  4. Freezing point of an aqueous solution is -0.186^(@)C. Elevation of boi...

    Text Solution

    |

  5. Equimolar solutions of two non-electroytes in the same solvent have:

    Text Solution

    |

  6. What should be the freezing point of aqueous solution containing 17g o...

    Text Solution

    |

  7. Ethylene glycol is used as an antifreeze in a cold cliamate Mass of et...

    Text Solution

    |

  8. 0.48 g of a substance is dissolved in 10.6 g of C(6)H(6).The freezing...

    Text Solution

    |

  9. The freezing point of equimolal soution will be highest for :

    Text Solution

    |

  10. The freezing point of 0.2molal K(2)SO(4)is -1.1^(@)C. Calculate van't ...

    Text Solution

    |

  11. A certain substance A tetramerizes in water to the extent of 80%. A so...

    Text Solution

    |

  12. The freezing point of a solution containing 50 cm^(3) of ethylene glyc...

    Text Solution

    |

  13. Cryoscopic constant of a liquid

    Text Solution

    |

  14. Addition of 0.643g of compound to 50ml of benzene (density =0.879mol^(...

    Text Solution

    |

  15. Which of the following solution will have highest freezing point?

    Text Solution

    |

  16. 0.48of a substance is dissolved in 10.6g of C(6)H(6).The freezing poin...

    Text Solution

    |

  17. What is the freezing point of a solution containing 8.1g Br in 100g wa...

    Text Solution

    |

  18. The freezing point of one molal NaClsolution assuming NaClto be 100%di...

    Text Solution

    |

  19. Which of the following aqueous molal solution have highest freezing po...

    Text Solution

    |

  20. When a solution w g of urea in 1Kg of water is cooled to -0.372^(@)C,2...

    Text Solution

    |